3 rules of Polycarboxylate (PCE) based water reducing agent compounding formulation
(1) The molecular structure and composition of PCE water reducer are completely different from that of conventional high efficiency water reducing agent, therefore, the previous experience and rules of compounding with traditional high-efficiency water reducer are not applicable to it. PCE superplasticizer can not be combined with sulfamate water reducing agent, naphthalene based water reducer, melamine water reducing agent, wood calcium water reducing agent and so on.
It can be formulated with aliphatic high-efficiency, wood sodium, wood magnesium common water reducing agent in the appropriate proportion range.
(2)In the compounding process, adding a certain amount of soluble sulfate and soluble alkali is helpful to improve its adaptability to cement. However, any powdered component should not be dissolved directly into the PCE liquid, but should be made into an aqueous solution and mixed with the PCE liquid. (3)PCE water reducer have a neutralization process and no neutralization process due to the different production processes, so that the product solution is divided into two categories of acidic and neutral. This difference is not obvious when applied to concrete, but often makes a difference in the quality of the compounded. In principle, components that are stable in alkaline environments can only be used for neutral PCE compounding, such as baking soda, sodium citrate, dextrin, sodium nitrite, etc. Materials that are unstable in alkaline environments must be compounded in acidic PCE water-reducing agents, such as citric acid, phosphoric acid and sodium pyrophosphate. materials that are not sensitive to acid and alkali environments can be compounded in both acid and alkali PCE, such as sodium gluconate, sodium nitrate, methanol, and triethanolamine. Therefore, it's necessary to evaluate the PCE pH value , slump-retaining and mud-resistant before compounding operations. Huaxuan Compound liquor Series designed to meet the slump retention needs of different concrete, this series greatly improves the compatibility of fresh mixed concrete, improves pumping and workability, and also increases the hardening strength of concrete, these product recommmend apply to long-time transportation and high-temperature construction, suitable for water conservancy, ports, transportation, electric power and other national key projects with high requirements on concrete performance, specially in high strength concrete, super fluidized vibration-free self-compacting concrete.
- KH-204 高减水型聚羧酸母液 high performance polycarboxylate water reducer -high water reducing rate
- KH-206 保坍减水综合性母液 high water reducing slump retention slow release early strength
- KH-207 高保坍聚羧酸母液 high Slump retaining polycarboxylate acid superplasticiser
